Zig Requires Chilkat v11.5.0+

XAdES XML Signature using ARSS (Aruba Remote Signing Service)

See more Signing in the Cloud Examples

Demonstrates how to sign XML using ARSS (Aruba Remote Signing Service). Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // --------------------------------------------------------------------------------
    // Also see Chilkat's Online WSDL Code Generator
    // to generate code and SOAP Request and Response XML for each operation in a WSDL.
    // --------------------------------------------------------------------------------

    // Create the XML to be signed.
    const sb_xml = try chilkat.StringBuilder.init();
    defer sb_xml.deinit();

    const b_crlf = true;
    sb_xml.appendLine("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>", b_crlf) catch {};
    sb_xml.appendLine("<SOAP-ENV:Envelope xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\">", b_crlf) catch {};
    sb_xml.appendLine("    <SOAP-ENV:Header>", b_crlf) catch {};
    sb_xml.appendLine("        <wsse:Security xmlns:wsse=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd\" SOAP-ENV:mustUnderstand=\"1\"></wsse:Security>", b_crlf) catch {};
    sb_xml.appendLine("    </SOAP-ENV:Header>", b_crlf) catch {};
    sb_xml.appendLine("    <SOAP-ENV:Body xmlns:SOAP-SEC=\"http://schemas.xmlsoap.org/soap/security/2000-12\" SOAP-SEC:id=\"Body\">", b_crlf) catch {};
    sb_xml.appendLine("        <z:FooBar xmlns:z=\"http://example.com\" />", b_crlf) catch {};
    sb_xml.appendLine("    </SOAP-ENV:Body>", b_crlf) catch {};
    sb_xml.appendLine("</SOAP-ENV:Envelope>", b_crlf) catch {};

    // Specify the signing certificate and the ARSS credentials

    // Load the certificate used for signing.  The certificate's private key is stored on
    // the Aruba.it server and the signing will happen remotely using the
    // ARSS (Aruba Remote Signing Service).
    // However, we still need the certificate locally (without private key).
    const cert = try chilkat.Cert.init();
    defer cert.deinit();
    cert.loadFromFile("qa_data/certs/myCert.cer") catch {
        std.debug.print("{s}\n", .{try cert.getLastErrorText(alloc)});
        return;
    };

    // To sign using the Aruba Remote Signing Service,
    // add the following lines of code to specify your authentication credentials,
    // and the ID of the certificate w/ private key on the server to be used.
    const json_arss = try chilkat.JsonObject.init();
    defer json_arss.deinit();

    // Set the "service" equal to "ARSS" to tell Chilkat to use ARSS for signing.
    json_arss.updateString("service", "ARSS") catch {};
    // Specify the certificate ID, such as "AS0"
    // This certificate should match the certificate loaded in the above code.
    json_arss.updateString("certID", "YOUR_ARSS_CERT_ID") catch {};
    json_arss.updateString("otpPwd", "YOUR_OTP_PWD") catch {};

    // Specifies the OTP authentication environment.
    //
    // Common values are:
    //   "demoprod" - Demo/Test environment
    //   "prod"     - Production environment
    //
    // This value is sent to the ARSS service and determines how the OTP
    // authentication is validated.  The correct value depends on the type
    // of Aruba account and environment that has been provisioned.
    //
    // If signing fails with an authentication-related error, verify that
    // the typeOtpAuth value matches the environment associated with the
    // ARSS account credentials being used.
    json_arss.updateString("typeOtpAuth", "demoprod") catch {};

    json_arss.updateString("user", "YOUR_ARSS_USERNAME") catch {};
    json_arss.updateString("userPWD", "YOUR_ARSS_PASSWORD") catch {};

    // The "endpoint" can be specified starting in Chilkat v11.5.0
    json_arss.updateString("endpoint", "https://app1.firma-remota.it/ArubaSignerService/webresources/signerservice") catch {};

    try cert.setCloudSigner(json_arss);

    // Prepare for signing...
    const gen = try chilkat.XmlDSigGen.init();
    defer gen.deinit();

    // Indicate where the Signature will be inserted.
    gen.setSigLocation("SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security");

    // Add a reference to the fragment of the XML to be signed.

    // Note: "Body" refers to the XML element having an "id" equal to "Body", where "id" is case insensitive
    // and where any namespace might qualify the attribute.  In this case, the SOAP-ENV:Body fragment is signed
    // NOT because the tag = "Body", but because it has SOAP-SEC:id="Body"
    gen.addSameDocRef("Body", "sha1", "EXCL_C14N", "", "") catch {};

    // (You can read about the SignedInfoPrefixList in the online reference documentation.  It's optional..)
    gen.setSignedInfoPrefixList("wsse SOAP-ENV");

    gen.setKeyInfoType("X509Data");
    gen.setX509Type("IssuerSerial");

    const b_use_private_key = true;
    gen.setX509Cert(cert, b_use_private_key) catch {
        std.debug.print("{s}\n", .{try gen.getLastErrorText(alloc)});
        return;
    };

    // Everything's specified.  Now create and insert the Signature
    // (The actual signing of the hash will happen on the Aruba server.)
    gen.createXmlDSigSb(sb_xml) catch {
        std.debug.print("{s}\n", .{try gen.getLastErrorText(alloc)});
        return;
    };

    // Examine the XML with the digital signature inserted
    std.debug.print("{s}\n", .{try sb_xml.getAsString(alloc)});
}